I realized today that a long standing bug was preventing the e-mail subscriptions from being sent properly. Looking at the code, it's possible that this never worked properly for anyone but myself (!). The correction is now in place.

As a reminder, you can subscribe to a topic, such as this one, to be notified whenever new posts have been done between your board visits. The notifications are being sent out once a day. To add a topic to your notifications, simply click on the "Subscribe" link offered next to the topic's title, click the appropriate checkbox to select the e-mail notices, then hit the "Subscribe" button. You can remove these notifications from your user profile.